I have a 06 gixxer 600. I have installed a pc5 but I'm a lil unsure about the last connector on the pc5 I believe it's the one that should connect to the o2 sensor. Well wen I connect that one the bike runs shitty and is burning gas really rich intake it off it runs better but still I'm not sure that I'm getting the full effect of the pc5 can anyone give me some insight on this topic.